Overview
The OPA827, produced by Texas Instruments, is a low-noise, high-precision, JFET-input operational amplifier. This device combines outstanding DC precision with excellent AC performance, making it suitable for a wide range of applications. The OPA827 features very low input offset voltage, low input bias current, and minimal noise, which are critical for high-precision analog circuits. It operates over a wide supply voltage range from ±4 V to ±18 V and is available in 8-pin SOIC and 8-pin VSSOP surface-mount packages, specified from –40°C to 125°C.
Key Specifications
| Parameter | Typical Value | Maximum Value |
|---|---|---|
| Input Voltage Noise Density at 1 kHz | 4 nV/√Hz | - |
| Input Voltage Noise (0.1 Hz to 10 Hz) | 250 nVPP | - |
| Input Bias Current | 3 pA | 10 pA |
| Input Offset Voltage | - | 150 µV |
| Input Offset Drift | 0.5 µV/°C | 2 µV/°C |
| Gain Bandwidth Product (GBW) | 22 MHz | - |
| Slew Rate | 28 V/µs | - |
| Quiescent Current per Channel | 4.8 mA | - |
| Supply Voltage Range | ±4 V to ±18 V | - |
| Packages | 8-Pin SOIC, 8-Pin VSSOP | - |
| Operating Temperature Range | –40°C to 125°C | - |
Key Features
- Low input offset voltage (150 µV maximum) and low drift over temperature (0.5 µV/°C typical)
- Very low input bias current (3 pA typical, 10 pA maximum)
- Low noise performance: 4 nV/√Hz at 1 kHz and 250 nVPP from 0.1 Hz to 10 Hz
- High gain bandwidth product (22 MHz) and slew rate (28 V/µs)
- Wide supply voltage range: ±4 V to ±18 V
- Low quiescent current: 4.8 mA per channel
- Available in 8-pin SOIC and 8-pin VSSOP packages
- High impedance inputs suitable for high source impedance and transimpedance applications
Applications
- ADC Drivers
- DAC Output Buffers
- Test Equipment
- Medical Equipment
- PLL Filters
- Seismic Applications
- Transimpedance Amplifiers
- Integrators
- Active Filters
- 16-bit to 18-bit mixed signal systems
- Precision ±10-V front ends
- Professional audio applications
Q & A
- What is the input voltage noise density of the OPA827 at 1 kHz?
The input voltage noise density of the OPA827 at 1 kHz is 4 nV/√Hz.
- What is the maximum input offset voltage of the OPA827?
The maximum input offset voltage of the OPA827 is 150 µV.
- What is the typical input bias current of the OPA827?
The typical input bias current of the OPA827 is 3 pA.
- What is the gain bandwidth product (GBW) of the OPA827?
The gain bandwidth product (GBW) of the OPA827 is 22 MHz.
- What is the slew rate of the OPA827?
The slew rate of the OPA827 is 28 V/µs.
- What is the quiescent current per channel of the OPA827?
The quiescent current per channel of the OPA827 is 4.8 mA.
- What is the supply voltage range of the OPA827?
The supply voltage range of the OPA827 is ±4 V to ±18 V.
- In what packages is the OPA827 available?
The OPA827 is available in 8-pin SOIC and 8-pin VSSOP packages.
- What is the operating temperature range of the OPA827?
The operating temperature range of the OPA827 is –40°C to 125°C.
- What are some common applications of the OPA827?
The OPA827 is commonly used in ADC drivers, DAC output buffers, test equipment, medical equipment, PLL filters, seismic applications, transimpedance amplifiers, integrators, active filters, and professional audio applications.
